беспе́чный (Russian) comes from Russian печа́ль, from Old East Slavic печаль, from Proto-Slavic pečalь, from Proto-Slavic pekti, from Proto-Indo-European pekʷ-, from Proto-Indo-European h₃-ép-kʷ-.
беспе́чный (Russian): careless, carefree, unconcerned